20985004

素因数分解:

$2^2\times {\mathrm{17}}^1\times {\mathrm{113}}^1\times {\mathrm{2731}}^1$

素因数の和:2865

約数の個数: 24

約数和(自身を含む): 39242448

約数和(自身を除く): 18257444

約数列:

[1, 2, 4, 17, 34, 68, 113, 226, 452, 1921, 2731, 3842, 5462, 7684, 10924, 46427, 92854, 185708, 308603, 617206, 1234412, 5246251, 10492502, 20985004]

約数ペア:

[(1, 20985004), (2, 10492502), (4, 5246251), (17, 1234412), (34, 617206), (68, 308603), (113, 185708), (226, 92854), (452, 46427), (1921, 10924), (2731, 7684), (3842, 5462)]